654 search results - page 68 / 131 » Complexity of Answering Queries Using Materialized Views |
125
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VLDB
2001
ACM
15 years 7 months ago
2001
ACM
In recent years, several methods have been proposed for implementing interactive similarity queries on multimedia databases. Common to all these methods is the idea to exploit use...
146
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EDBT
2006
ACM
16 years 3 months ago
2006
ACM
In this paper we present a novel approach for estimating the selectivity of XML twig queries. Such a technique is useful for approximate query answering as well as for determining...
124
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VLDB
1997
ACM
15 years 7 months ago
1997
ACM
Query optimizers that explore a search space exhaustively using transformation rules usually apply all possible rules on each alternative, and stop when no new information is prod...
118
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FQAS
2006
Springer
15 years 6 months ago
2006
Springer
Abstract. When querying XML collections, users cannot always express their need in a precise way. Systems should therefore support vagueness at both the content and structural leve...
123
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CAISE
2004
Springer
15 years 8 months ago
2004
Springer
Abstract. ID-Logic is a knowledge representation language that extends first-order logic with non-monotone inductive definitions. This paper introduces an ID-Logic based framewor...